Polyrhacis are really easy to keep, very calm and nice looking too. I recommend you give them a thin layer of coco-fiber with some small twigs/bark on the floor so that they can adjust their nest, unlike orcophylla they generally don't weave very much until colonies are quite large, so while the colony is young I'd reccomend using test tubes suspended in the tree first

So I've ordered a two queen and 40-50 worker Polyrhachis dives colony from antkit that I'll be receiving in the new year.

I'm thinking of using a 300mm ×300 mm acrylic tray to act as a moat which will be raised to allow a heat mat to be placed underneath. Inside the tray i will place a 200mm ×200mm ×200mm acrylic 5 sided display box.

I'll use eco earth as a substrate with leaf litter, different grade orchid barks, twigs and moss.